Upgrade calculator

Lumber Depot

Each row is one upgrade: level N → N+1. Totals sum wood, grain, and herbs for steps we have in the guide. Level pickers run through 30; if your target is above the last level with data (currently 13), totals only cover upgrades through that level.

Granary Herb Storage

Current level

Target level

My Sanctuary level (optional)

Highlights steps where Sanctuary must be higher (1–30). Other prerequisites are listed per step.

*data can be incorrect too, please verify it before using

Totals for levels 1 → 2

Wood

228

Grain

225

Herbs

Steps

Data compiled for Last Asylum Guide · Maintainer: Slaughter Queen · Game balance may change with patches.

About Lumber Depot

Priority: Medium-Low

The Lumber Depot stores your wood reserves. As Lumberyard production scales up and building upgrade costs rise, having sufficient storage becomes critical to avoid wasting passive income.

Upgrade Tips

1Always upgrade Lumber Depot in step with your Lumberyard to avoid hitting the storage ceiling.
2A larger wood reserve means you can start high-cost building upgrades immediately without gathering.
3Resource storage buildings are cheap to upgrade — don't skip them to save resources.